Traders itching to "strangle" or "straddle" the newly launched shares of Twitter Inc will finally get their chance on Friday when trading in the social media company's options launches on US exchanges.

Just over a week after the stock's initial public offering and debut on the New York Stock Exchange, options market makers will begin pricing and trading contracts to buy or sell Twitter shares at various prices in the future.

Options are an increasingly popular way to make inexpensive bets on the direction a stock may take or to hedge existing positions in the shares. The market is rife with strategies bearing colorful names such as "strangles" and "straddles," which are bets on volatility, or even "iron condors," which wager that a stock will remain in a tight range.

Given the high level of publicity surrounding the IPO last week, Twitter's options are expected to be popular. But because of the stock's limited trading history, market makers will be challenged to price its puts and calls in the early going after the market opens at 9:30 EST.

"The trading of Twitter puts and calls will be tricky at first," said Brian Overby, senior options analyst at online brokerage firm TradeKing based in Fort Lauderdale, Florida.

The gap between bid and ask prices on the contracts, known as the spread, is expected to be wide at first, Overby said.

That could contribute to choppy trading in the first several days.

The behavior of the stock, and by extension the option prices, will likely be very unpredictable, said Brent Archer, senior options analyst at options research firm InvestorsObserver.com, in Charlottesville, Virginia. "If we look back to Facebook, that stock took about three weeks before it settled down into a defined range."

Volume should be robust, but some traders expect turnover to be below Facebook Inc.'s launch, given the micro-messaging company has a smaller number of shares and market value.

More than 365,000 contracts changed hands in Facebook's option debut on May 29, 2012, a record for the first day of option trading on a stock, according to Trade Alert. Trade Alert president Henry Schwartz expects Twitter, based on its stock volume, to trade 150,000 to 200,000 contracts on Friday.

Twitter, with a market capitalization of roughly $24 billion, is roughly a fifth the size of Facebook, valued at close to $120 billion. Twitter's IPO raised just $1.8 billion, compared with Facebook's massive, $16 billion offering.